CVE-2021-43566

All versions of Samba prior to 4.13.16 are vulnerable to a malicious client
using an SMB1 or NFS race to allow a directory to be created in an area of
the server file system not exported under the share definition. Note that
SMB1 has to be enabled, or the share also available via NFS in order for
this attack to succeed.

Bugs

• <https://bugzilla.samba.org/show_bug.cgi?id=13979&gt;